FKM B-651C rubber premix containing curing agent Excellent mold flow Very good tear resistance Adhesion to metal inserts

Viton fluoroelastomers are available in four major series: A, B, F and ETP, each with its own unique performance characteristics.
The main difference between the Viton™ product families is fluid resistance, which is dependent on the fluorine content of the polymer.
This property is determined by the type and relative amounts of the specific monomers that make up the polymer.
Fluid resistance generally increases with increasing fluorine content (see table below). As the fluorine content increases,
However, low temperature flexibility is reduced. This helps designers and engineers balance fluid resistance and
Low temperature flexibility of final cure.
The choice of which Viton product to use for any given application will be determined by the end use service. choose
The appropriate fluoroelastomer will ultimately be determined based on the required situation:
* Resistant to amines or corrosives
* Resistant to hydrocarbon fluids
* Flexibility at low temperatures (ability to maintain seal at low temperatures)

See the table below for general performance differences. For more details, see the complete product selection guide, chemical resistance guide, or contact us.